Update dependency @vitejs/plugin-react to v6

Author: renovate[bot]

package.json

@@ -86,7 +86,7 @@
     "@types/node": "^24.10.4",
     "@types/react": "^19.2.7",
     "@types/react-dom": "^19.2.3",
-    "@vitejs/plugin-react": "^5.1.1",
+    "@vitejs/plugin-react": "^6.0.0",
     "chokidar-cli": "3.0.0",
     "convex": "1.38.0",
     "convex-test": "0.0.40",